Street photography is all the rage at the moment. As a photographic genre it is usually said to date from the introduction of miniature 35mm cameras in the 1930s. But this old print - which appeared in a mixed batch of old photographs bought an eBay - dates from at least a decade earlier. It really is a fine example: whatever the camera, it has managed to capture the moment in time with both style and substance. That look between the two girls is worth a short novella, that busy background could give rise to a short thesis on social history.